COLEOPTERA 517 



is nearly twice as wide as the base; tlie surface In this wide part is elevated in the same 

 manner as in A. minor, but to a much less extent. 



The prothorax bears very numerous, strong, rather short aciculate punctures, the 

 more anterior directed obliquely towards the middle line. The elytra have strong, very 

 close, rugae, directed longitudinally on the disc, those near the suture a little obliquely 

 towards the suture, those at the sides obliquely outwards; in the humeral area somewhat 

 obsolete. First ventral segment much less numerously punctured than the metasternum. 

 Two specimens, the second specimen much smaller and in a very bad state of preserva- 

 tion. Wings not examined. 



Hab. Kauai; from the high plateau, viii. iSg6 (no. 682, Perkins). 



(4) Aivitus faci/is. Sharp. 



Aeletes facilis Sharp, Tr. Dublin Soc. in. 18S5, p. 130. 



I have examined the type and five other specimens collected by j\lr Blackburn. We 

 have received only two specimens in Mr Perkins' collection. The original diagnosis is 

 as follows: — " Oblongo-ovalis, convexus, piceus, nitidus, crebre punctulatus, jjunctis ad 

 elytrorum apicem densis et strigosis. Long. \\ mm." 



Plate XV. fig. 4. 



This species is very closely allied to A. kanaiensis, being chicfiy distinguished by 

 its much smaller size and the absence of a distinct transverse suture before the antennae. 

 Like the preceding species, it is smooth and shining, with numerous punctures, varying 

 somewhat in size, but not very large or close, rather shallower on the thorax than in 

 A. kanaiensis: the ends of the elytra are rugose: oblique elytral striae not present: the 

 striae at the sides of the prosternal keel diverge gradually from the base forwards: 

 mesosternum not at all impressed, meso-metasternal suture very faintly marked; meso- 

 and metasterna and first abdominal segment with numerous rather strong punctures, 

 becoming obsolete over the middle of the metasternum. Wings not examined. 



Hab. Oahu : near Honolulu (Blackburn); mts. near Honolulu, 1900 (no. 758, 

 Perkins). 



Acriius facilis, var. fiaivaiiciisis, var. nov. 



Minor, capite sutura distincta transversa ante antennis: long. i-| mm. 



There are two distinctly smaller, rather narrow specimens, each with a distinct line 

 across the head just in front of the antennae, but in all other respects agreeing with the 

 Oahu form. 



Hai;. Hawaii. Kona, over 4000 ft. (no. 231); Kilauea, no. 656 (Perkins). 



